Improvement in arm-supports for keyed instruments



LEOPOLDIN 'BUGIIBERGER 0F CHICAGO, ILLINOIS.

Letters Patent No. 109,582, dated November 29,'1870 antedated November 12, 1870.

IMPROVEMENT IN ARM-SUPPORTS FCR KEYED INSTRUMENTS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom lit may concern Le it known that l', Jnoronorn Bueirnnenu, ot Chicago, in the county o" Geel; and State otl Illinois, have invented an improv d Arm-Sn1n)ort i'or Keyed Instruments; and. I de hereby declare that the following is a full, clear1 and exact deseriptiou thereof, reference being had tothe accompanying drawing and letters marked thereon, makinga part of this specification, in which- Figure l is a perspective representation of my invention. p

The object ot' the present invention is to vprovide an arm-support for keyed instruments, which shall not only be adjustable to any desired height, but shall so turn in its bearingthat when itis raised or lowered, the same lat surface may be presented to the arm, thereby causing no injury to the muscles ofthe arms, while at the same time the student is prevented from holding the arms so lowV as to be ont ot' place for practice, as the whole is hereafter fully described.

A represents a broken elevation ot the front side of the piano or organ, to which is fastened clamps E F, by means of set-screws 'l'.

The clamps are made of any suitable metal, and plated with silver or otherwise ushed according to any particular requirement.

The arms F, at their outer ends, are provided with sockets, in which vertical standards D are placed, and adjusted to any required height by means ot' set-screws G tapped into said sockets.

The standards D are also provided with sockets C C, in which the pivots of a revolving bar, B, are placed.

This bar is made of such length as will correspond with the length of the key-board of any particular instrument, and it is attened ou its opposite sides, ill order that a suitable surface may be presented to thearms, so that the latter may not be injured by coming in Contact with it, and it is so arranged that, when it is raised or lowered `in the arms F, that it may be turned on its pivot-s to give its flat sides a suitable position to suit the arms, and so that it may be held fast by set-screws H tapped into the sockets C C.

In ordinary cases the wooden bar` will answer the purpose well, but, if desirable, itmay be covered with any suitable fabric, such as flannel, velvet, or plush.

Having thus described my invention,

I cannot claim broadly an arm-support nor clamps for fastening; but

That I do claim, and desire to secure by Letters Patent ot' the United States, is

Providing an arm-support I'or keyed instruments, with an adjustable bar, B, which is pivoted to the adjustable standards I), and held in a iixed position by set-screws II H, so that, when the bar is either raised or lowered, its flat side may be presented to the arm of the operator, as set forth.

L. BUGIIBERGER.

Witnesses G. L. Gnarls', ll. E. GIBSON. 

